When I took a Missions course in college, they presented a "nut" theory as an alternative to what we believed. The "nut" theory held that:
1) Most missionaries don't know what they're doing.
2) Most mission boards don't know what they're doing.
3) Most churches that support missionaries don't know what they're doing.
After six years in Mexico, I'm convinced that all three are true. Successful pastors down here believe they are true. Most missionaries who come down here leave little or no success behind them, and most never come back.
I'll be posting two or three times a week on "Why Missionaries Fail," and I hope you'll join in with comments and suggestions.